Improvement in valve-gears for engines



I B. P. PERRY. Valve-Gear for Engines.

No. 210,353. Patented Nov. 26,1878.

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UNITED STATES PATENT OEEIoE.

BENJAMIN P. PERRY, OF RICHMOND, INDIANA.

IMPROVEMENT IN VALVE-GEARS FOR ENGINES.

Specification forming part of Letters Patent No. 210,353, dated November 26, 1878; application filed November 18, 1878.

To all whom it may concern:

Be it known that I, BENJAMIN P. PERRY, of Richmond, in the county of \Vayne and State of Indiana, have invented certain Improvements in Valve-Movements, of which the following is a specification:

My invention relates to a novel valve-movement for steam-engines, whereby the throw of the valve is increased or diminished by the action of the governor by means of a self-adjustin g slide, as hereinafter fully described, and set forth in the specification and claims.

Figure 1 is a side elevation. Fig. 2 is an end-elevation.

A represents the bed. B is a standard attached thereto. 0 is the self-adjusting slideplate, actuated by the governor attached to the stem E. The stem E has a joint, F, to allow the slide-plate O to work freely without hinderance. The portion G of the stem is provided with a screw-thread to screw into the socket H, for vertical adjustment when required. The slide-plate O is held in place by means of the plate D and set-screws a. The stem connecting the governor to the adjustable slide-plate O is pivoted to the stud d attached to the slide-plate.

I represents the eccentric attached to the flywheel shaft of the engine, and'is connected to the slide-plate O by means of the connectin g-rod J, attached to the wrist-pin K. The upper end of the slide-plate O has the wrist-pin L, to which the connecting-rod M is attached, and connected to the lever N by means of the wrist-pin P. The lever N operates the rotary valve R. The governor is attached to the circular plate 0, attached to the standard S.

The plate D oscillates upon the stud e. (Seen in Fig. 2.) The plate D and slide-plate 0 act entirely independently of each other, the plate D oscillating only on the stud 0, while the slide-plate (J oscillates with plate D, and also slides longitudinally on plate D to changethe throw of the valve according to the speed of the governor. Thus it will be seen that the center of the slide-plate G at the pivot (Z is easily changed by the speed of the governor, making the whole moving mechanism extremely sensitive.

Having thus fully described my intention, what I claim, and desire to secure by Letters Patent, is-

1. In valve-gear for engines, the plate D, pivoted centrally on a fixed point, and having attached thereto an adjustable sliding plate, the opposite ends of said plate being connected respectively to the valve-stem and the eccentric, substantially as herein shown and described.

2. The stem E, provided with the joint F and socket H, in combination with the oscillating slide-plate O and plate D, substantially as and for the purpose specified.

BENJAMIN P. PERRY.

\Vitnesses '1. P. BUNYAN, MARIDETH 00X. 

